Transparent pricing
Part L pricing.
Part L Consultant guide prices are £150 to £300 for a single plot or self-build, including design-stage and as-built SAP and the on-construction EPC, and £120 to £200 per plot on small sites of two to ten plots. Larger developments and mixed-use schemes are quoted per scheme, non-domestic SBEM work starts from £350, and extensions and conversions are quoted on the drawings. Every figure is a guide only: a fixed written quote is issued before work starts, and the VAT position is confirmed on that quote.
£150
Single plot, guide from
£120
Per plot on small sites, from
£350
Non-domestic SBEM, from
0
Surprise fees after the quote
How we price
What drives the price.
Dwelling types, stages and revisions
Part L pricing tracks modelling effort, not mileage. The main driver is how many distinct dwelling types a scheme has: ten identical plots is close to one modelling exercise repeated, while five different house types is five. The second driver is stages — design stage alone, or design stage plus the as-built close-out with the test result, commissioning evidence and the on-construction EPC. The third is revisions: every time the glazing, heating or insulation specification changes, the model has to be rerun. Non-domestic work adds zoning, use classes and building services on top.
| Project | What it covers | Guide price |
|---|---|---|
| Single plot or self-build | Design-stage and as-built SAP, plus the on-construction EPC | £150–£300 |
| Small site, 2–10 plots | Modelling per dwelling type, with as-built close-out | £120–£200 per plot |
| Larger developments | Full design-stage and as-built programme | Quoted per scheme |
| Non-domestic (SBEM) | Design-stage and as-built, plus the EPC | From £350 |
| Mixed-use | SAP and SBEM coordinated together | Quoted per scheme |
| Extensions and conversions | SAP comparison or notional-building assessment | Quoted on the drawings |
Guide prices only. Every project is quoted in writing before work starts, based on the drawings and the number of dwelling types. VAT position confirmed on the quote.
What is included
- Modelling by an accredited energy assessor using approved software
- A design-stage output you can issue to Building Control
- Plain-English notes on where the specification is marginal
- The as-built calculation and compliance report at completion
- The on-construction EPC where the project is a new dwelling
- Direct contact with the assessor doing the work
What is not included
- Building Control application fees, which you pay to your chosen body
- Air tightness testing and commissioning, carried out by test bodies on site
- Design work — we assess and advise, we do not specify the building for you
- Products and installation, and any works needed to meet the target
Why non-domestic and mixed-use work is always quoted
Non-domestic buildings are modelled in SBEM against a notional building, and the work scales with how the building is divided up: floor areas by use class, thermal zones, lighting, mechanical ventilation, cooling and any renewables. A single shop unit and a multi-storey office with a curtain wall and rooftop plant are not comparable jobs. Mixed-use schemes need both SAP for the dwellings and SBEM for the commercial parts, coordinated so the shared elements are treated consistently. That is why these are quoted on the drawings rather than sold from a list.
How it works
From drawings to sign-off.
01
Drawings
Send plans, sections and the outline specification for a fixed written quote.
02
Design stage
The building is modelled in SAP or SBEM and any shortfall flagged early.
03
On site
Specification changes, testing and commissioning evidence kept aligned.
04
As-built sign-off
As-built calculation, compliance report and the on-construction EPC.
Choose your service
Pick your scope.
Get your quote in writing.
No obligation. Guide prices only until the written quote is issued.
Who runs your contract
Awais Sarwar, MSc — Accredited Energy Assessor
Awais is an accredited domestic and commercial energy assessor and the owner of Team EPC Ltd, which trades as Part L Consultant. He has surveyed and lodged EPCs across flats, houses, HMOs, managed portfolios and commercial premises throughout London and the Home Counties, and is currently studying an MSc in philosophy alongside running the business.
Off the clock: cricket, family time, an MSc in philosophy in progress and finding London's best food.
Awais Sarwar
Founder · Accredited energy assessor
